Lock for car-doors.



J. EDMAN. LOOK FOR OAR DOORS. APPLIOATION FILED DEG.9,1912.

Patented Oct. 6, 1914.

Fig Z,

. oted lock blades,

JOHN EDMAN, OF MINNEAPOLIS,

PANY, 0F N EAPOLIS,

TED STATE MINNESOTA, ASSIGNOR TO :EDMAN CARI IDOORCOIVL MINNESOTA, A CORPORATION OF MINNESOTA.

. LOOK FOR OAR-DOORS.

Specification of. Letters Patent. TApphcatioxi filed December 9,1912. Serial No. 735,661.

ToaZZ whom it may concern: a

Be it known that 1, JOHN EDMAN, a citizen of the United States,residingatMinneapolis, in the county of Hennepin. and State of Minnesota, have invented certain new and useful Improvementsin Looks for Car Doors; and I do herebydeclare the following to be a full, clear, and exact description of the invention, suchas will enable others skilled in the art to. which it appertains to make and use the same.

.[y invention relatesto car doors and is particularly directed to the improvement in the construction of car doors of the general type disclosed in my prior Patent 884,011, of date, April 7th, 1908, entitled Grain door for cars.

Generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In car doors of the type above noted, pivto hold the doors in "working positions and against outward swinging movements. Hitherto, I have foundit desirable to cast these look blades and to'form the same with tubular backs to obtain strength and lightness. In the formation. of these tubular backs, very long cores are necessary, and this makes the blades thus cast, expensive.

One feature of my present invention provides an improved construction of thelock blade whereby it may be cast without cores and still have the desired strength and lightness.

the improved lock In the accompanying drawings which illustrate the invention, like characters indicate. like parts throughout the several views.

eferring to the drawings, Figure 1 is a,

fragmentary view in side elevation showing blade applied to a car in connection with the caradoor; Fig. 2 is a horizontal section on an enlarged scale taken on the line x 50 on Fig. 1 Fig. 3 is an end plan view of the lock blade; and Fig. 4 is a side elevation of the same, some parts being broken away.

The numeral 1 indicates the car body and the numeral 2 the car door, which latter is seated in one of the side door openings of said car and is adapted to swing outward, but is normally held against outward swinging movements, by a pair of my improved lock blades, one on. each side of the door certain of the parts of so-called, are employed blades are. formed engaging flanges 3and with channeled backs 4, which latter take the place of the tubular channel-shaped backs 4, at then-upper and lower ends, are formed with trunnions 5 that are seated in suitable upper and lower bearings 6 and 7, suitably secured to the car body, preferably to the the channel-back 4 is provided with trans verse stiffening, ribs 8. The edges of the door 2 are normallyheld 3 of the lock blades, andthe inner flanges of metallic channel beams 9, that are rigidly secured. to the door posts 1 of the car body, just inward of the channel backs of the said lock blades. Smaller channel irons or bars 10 are secured to the door posts just outward of the channel irons or bars 9. These chair nel bars!) and 10 form a sort of housing for the channel backs of the lock blades, and the outer angle bars 10 afford abutments against which the outside flanges of the channel backs of the lock blades can be sprung under Patenteol Oct. 6,1914: 1

door posts thereof.l At suitable intervals longitudinally thereof,

between the flanges backs hitherto employed, These 1 trated by full lines and by dotted lines in Fig. 2.

As is evident,in the lockblade described and illustrated in the partfiask is capable of being molded from thesand, and hence, may be cast in a twopart flask and Without the use of cores.

What I claim is: 1. The combination door movablethrough a door opening in the body of said car, of inner and outer vertically extended bars secured to the sides of the door opening, and a lock blade pivotally mounted to work between said of said bars and to release the same, said lock blade having a longitudinally extended flange offset from its pivotal axis and engageable with blade is in operative position. i r a 2. The combination with a car, and a car door movable through a door opening in the liody of said car, of inner and outer vertical of th door opening, and a. lock blade pivotally mounted to work between said bars, and having a channel-shaped back, saidlock drawings, the twoi with a car, and a car:

bars and operative to secure said door against the inner said outer bar when said, lock extended bars secured to thesides blade being operative to secure said door against the inner of said bars and to re lease the same, the flanges of the channel- Y shaped back of sad lock blade being alternately engageable with opposite sides of the outer of said bars when said lock blade is in inoperative posioperative position.

4. The combination with a car and a car door movable through a door opening in said car body, of relatively wide inner and relatively narrow outer vertically extended either an operative or an angle bars secured to the sides of said door 0 0171- opening, lock blades pivotally lnounted to 3. The combination With a car, and a car i work between the extended flanges of said door movable through adoor opening in the inner and outer angle bars, and operative to body of said car, of relatiyelywide inner 1 and relatively narrow 'outenvertica-lly ex tended bars secured to the sides of said door opening,and a lock blade pivotally mounted to work between the said bars; and operative to secure said door against'the relatively wide bar and to release said door ior movement outward past said relatively narrow bar, said lock bladehaving a laterally projecting flange extending" between said bars and engageable with said relatively 1,

relatively large-inner angle bars, and tore" lease, said door'for move'me ts outward past said relatively narrow outer angle bars.

in presence of two witnesses.

JOHN EDMAN.

Witnesses BEBNIQE G. \VHEELER, F. D. MERCHANT.

five cents each, by addressing the Commissioner of Patents,

Washington, I). G.

Copies of this patent may be obtained for secure said door against the flange of the narrow bar when said lock blade is in an I In testimony whereof I afiix my signature .i 

